D. Zuddas

activity

20172026

collaborators

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5 papers · 1 filter

math.GT2026

Branched coverings of simply connected $4$ -manifolds

Valentina Bais, Riccardo Piergallini, Daniele Zuddas

We show that, given $d \geq 4$ and two closed connected oriented PL $4$ -manifolds $M$ and $N$ such that $N$ has a handle decomposition with no $1$ - and $3$ -handles, there exists a…

math.GT2025

Branched covering representation of non-orientable $4$ -manifolds

Valentina Bais, Riccardo Piergallini, Daniele Zuddas

We show that every closed connected non-orientable PL $4$ -manifold $X$ is a simple branched covering of $\RP^4$. We also show that $X$ is a simple branched covering of the twisted…

math.GT2024

Some examples of small irreducible exotic 4-manifolds with free abelian fundamental group

Valentina Bais, Rafael Torres, Daniele Zuddas

We produce examples of pairwise non-diffeomorphic closed irreducible 4-manifolds with non-trivial free abelian fundamental group of rank less than three and small Euler characteris…

math.GT2018

Certifying a compact topological 4-manifold

Michael Freedman, Daniele Zuddas

We prove that compact topological 4-manifolds can be effectively presented by a finite amount of data.

math.GT2018

Special moves for open book decompositions of 3-manifolds

Riccardo Piergallini, Daniele Zuddas

We provide a complete set of two moves that suffice to relate any two open book decompositions of a given 3-manifold. One of the moves is the usual plumbing with a positive or nega…